Commit | Line | Data |
---|---|---|
d8b14f8a MA |
1 | /* |
2 | Mantis PCI bridge driver | |
3 | ||
4 | Copyright (C) 2005, 2006 Manu Abraham (abraham.manu@gmail.com) | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | */ | |
20 | ||
21 | #include "mantis_common.h" | |
22 | #include "mantis_hif.h" | |
23 | #include "mantis_link.h" /* temporary due to physical layer stuff */ | |
24 | ||
25 | static int mantis_hif_data_available(struct mantis_ca *ca) | |
26 | { | |
27 | struct mantis_pci *mantis = ca->ca_priv; | |
28 | int rc = 0; | |
29 | ||
30 | if (wait_event_interruptible_timeout(ca->hif_data_wq, | |
31 | ca->sbuf_status & MANTIS_SBUF_DATA_AVAIL, | |
32 | msecs_to_jiffies(500)) == -ERESTARTSYS) { | |
33 | ||
34 | dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Read wait event timeout !", mantis->num); | |
35 | rc = -EREMOTEIO; | |
36 | } | |
37 | ca->sbuf_status &= ~MANTIS_SBUF_DATA_AVAIL; | |
38 | udelay(2); | |
39 | return rc; | |
40 | } | |
41 | ||
42 | static int mantis_hif_sbuf_opdone_wait(struct mantis_ca *ca) | |
43 | { | |
44 | struct mantis_pci *mantis = ca->ca_priv; | |
45 | int rc = 0; | |
46 | ||
47 | if (wait_event_interruptible_timeout(ca->hif_opdone_wq, | |
48 | ca->hif_event & MANTIS_SBUF_OPDONE, | |
49 | msecs_to_jiffies(500)) == -ERESTARTSYS) { | |
50 | ||
51 | dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): Smart buffer operation timeout !", mantis->num); | |
52 | rc = -EREMOTEIO; | |
53 | } | |
54 | ca->hif_event &= ~MANTIS_SBUF_OPDONE; | |
55 | udelay(5); | |
56 | return rc; | |
57 | } | |
58 | ||
59 | int mantis_hif_read_mem(struct mantis_ca *ca, u32 addr) | |
60 | { | |
61 | struct mantis_pci *mantis = ca->ca_priv; | |
62 | u32 hif_addr = 0, data, count = 4; | |
63 | ||
64 | hif_addr |= MANTIS_GPIF_HIFRDWRN; | |
65 | hif_addr &= ~MANTIS_GPIF_PCMCIAREG; | |
66 | hif_addr &= ~MANTIS_GPIF_PCMCIAIOM; | |
67 | hif_addr |= addr; | |
68 | ||
69 | mmwrite(hif_addr, MANTIS_GPIF_BRADDR); | |
70 | mmwrite(count, MANTIS_GPIF_BRBYTES); | |
71 | ||
72 | udelay(20); | |
73 | ||
74 | mmwrite(hif_addr, MANTIS_GPIF_HIFADDR); | |
75 | if (mantis_hif_data_available(ca) != 0) { | |
76 | dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): GPIF Smart Buffer burst read failed", mantis->num); | |
77 | return -EREMOTEIO; | |
78 | } | |
79 | if (mantis_hif_sbuf_opdone_wait(ca) != 0) { | |
80 | dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): GPIF Smart Buffer operation failed", mantis->num); | |
81 | return -EREMOTEIO; | |
82 | } | |
83 | data = mmread(MANTIS_GPIF_HIFDIN); | |
84 | ||
85 | return (data >> 24) & 0xff; | |
86 | } | |
87 | ||
88 | int mantis_hif_write_mem(struct mantis_ca *ca, u32 addr, u8 data) | |
89 | { | |
90 | struct mantis_slot *slot = ca->slot; | |
91 | struct mantis_pci *mantis = ca->ca_priv; | |
92 | u32 hif_addr = 0; | |
93 | ||
94 | hif_addr &= ~MANTIS_GPIF_HIFRDWRN; | |
95 | hif_addr &= ~MANTIS_GPIF_PCMCIAREG; | |
96 | hif_addr &= ~MANTIS_GPIF_PCMCIAIOM; | |
97 | hif_addr |= addr; | |
98 | ||
99 | mmwrite(slot->slave_cfg, MANTIS_GPIF_CFGSLA); /* Slot0 alone for now */ | |
100 | ||
101 | mmwrite(hif_addr, MANTIS_GPIF_HIFADDR); | |
102 | mmwrite(data, MANTIS_GPIF_HIFDOUT); | |
103 | ca->hif_job_queue = MANTIS_HIF_MEMWR; | |
104 | ||
105 | if (mantis_hif_sbuf_opdone_wait(ca) != 0) { | |
106 | ca->hif_job_queue &= ~MANTIS_HIF_MEMWR; | |
107 | dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num); | |
108 | return -EREMOTEIO; | |
109 | } | |
110 | ca->hif_job_queue &= ~MANTIS_HIF_MEMWR; | |
111 | return 0; | |
112 | } | |
113 | ||
114 | int mantis_hif_init(struct mantis_ca *ca) | |
115 | { | |
116 | struct mantis_pci *mantis = ca->ca_priv; | |
117 | u32 irqcfg; | |
118 | ||
119 | dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Initializing Mantis Host Interface", mantis->num); | |
120 | init_waitqueue_head(&ca->hif_data_wq); | |
121 | init_waitqueue_head(&ca->hif_opdone_wq); | |
122 | ||
123 | irqcfg = mmread(MANTIS_GPIF_IRQCFG); | |
124 | irqcfg |= MANTIS_MASK_BRRDY; | |
125 | mmwrite(irqcfg, MANTIS_GPIF_IRQCFG); | |
126 | ||
127 | return 0; | |
128 | } | |
129 | ||
130 | void mantis_hif_exit(struct mantis_ca *ca) | |
131 | { | |
132 | struct mantis_pci *mantis = ca->ca_priv; | |
133 | u32 irqcfg; | |
134 | ||
135 | dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Exiting Mantis Host Interface", mantis->num); | |
136 | irqcfg = mmread(MANTIS_GPIF_IRQCFG); | |
137 | irqcfg &= ~MANTIS_MASK_BRRDY; | |
138 | mmwrite(irqcfg, MANTIS_GPIF_IRQCFG); | |
139 | } |